Quote from GTS:
If a position shows up in your account that you don't believe is correct I do not think it is wise to simply close it first and ask questions later. Doing so is just as risky as leaving the position intact.
You are right in a situation where you have a position that makes no sense. I.e., something that you do not normally trade. I've had this happen once before with IB and I did not close the position out.
However, in this situation the original poster had a similar order in his basket order. The fact that the position mirrored his basket order is an indication that something might have gone terribly wrong with an earlier basket order. In which case exiting immediately makes sense to me. Maybe not to you.
Another thing that is bothersome about this situation is that zzzap apparently had orders to close out the position but at lower prices. I.e., if the news came out and GBP tanked, zzzap apparently would have made money on the erroneous position. How do you explain that? Isn't that gaming the position?
By the way, it looks like from IBj's log:
19:55:57 Client submits multiple orders in various currencies. This is the first time we can know with certainty that the client is using and attending the TWS. Had he covered the GBP position at this time, the loss would have been roughly 12000 USD.
20:07:31 through 20:10 Client submits multiple orders for GBP futures on the buy (covering side) although the bids seem to be far away from the market. Had the position been covered here instead of just being bid, the loss would have been ~8700 USD.
20:19 As widely expected, and on the announced schedule, the Fed cuts interest rates; the 50 bps is the surprise and the futures rocket up from 1.9954 to 2.0050 in seconds, retreat back to 2.0000 and then proceed rapidly again up past 2.0080.
that zzzap had about 23 minutes to contact IB about the position before the news came out. Did he make any attempt to contact IB about the position during this time?
Again, I hope for zzzap's sake that he is made whole. It is an unfortunate situation.